71551955 has 12 divisors (see below), whose sum is σ = 87363552. Its totient is φ = 56257680.

The previous prime is 71551943. The next prime is 71551979. The reversal of 71551955 is 55915517.

It is not a de Polignac number, because 71551955 - 2¹⁰ = 71550931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15350 + ... + 19460.

It is an arithmetic number, because the mean of its divisors is an integer number (7280296).

Almost surely, 2^71551955 is an apocalyptic number.

71551955 is a deficient number, since it is larger than the sum of its proper divisors (15811597).

71551955 is an equidigital number, since it uses as much as digits as its factorization.

71551955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234 (or 4175 counting only the distinct ones).

The product of its digits is 39375, while the sum is 38.

The square root of 71551955 is about 8458.8388683081. The cubic root of 71551955 is about 415.1520321669.

The spelling of 71551955 in words is "seventy-one million, five hundred fifty-one thousand, nine hundred fifty-five".